NORBORNENE POLYMERS AND COPOLYMERS WITH A STEREOREGULAR 2,3 DISYNDIOTACTIC STRUCTURE: THEIR PREPARATION PROCESSES AND CLATHRATE STRUCTURES INVOLVING THE SAME

摘要

It isdescribedthe production of crystalline 2,3 disyndiotactic polynorbornene with a decomposition (without melting) temperature in the range 380-400 °C characterized by insolubilityin aromatic hydrocarbons at room temperature and partially soluble in boiling toluene. The production process, the crystalstructure and new clathrate structures of PNB formed by polymeric heliceswithtubular internal cavitiesare also described.